Gearless traction machine and installation and maintenance device thereof

Abstract

The invention discloses a gearless traction machine. A stator pedestal and a bearing support are fixed on a traction machine base. A main shaft is supported through bearings arranged in the bearing support and the stator pedestal. A traction wheel is located on the main shaft between the stator pedestal and the bearing support. A rotor is installed on the other side of the main shaft, and a stator is fixed in the stator pedestal. A connection sleeve is arranged between the bearing and the main shaft, the connection sleeve is in conical surface match with the bearing, and the rotor is in conical surface match with the main shaft. In addition, threads are arranged at the end, located on the outer side of the rotor, of the main shaft. The invention further discloses an installation and maintenance device used for the gearless traction machine. Parts which are not assembled together of the gearless traction machine can be transported to a field for installation, large lifting devices such as a building tower crane are not needed, when some parts need to be repaired and replaced, due to the fact that the parts are more conveniently and detachably maintained and replaced, transportation cost is reduced and transportation difficulty is lowered, and the transportation flexibility and the carrying flexibility are improved. When the traction machine is updated and transformed, the parts which can be continuously used can be fully utilized, and updating cost is reduced.

Description

technical field [0001] The invention relates to a gearless traction machine of an elevator and its installation and maintenance device. The gearless traction machine is suitable for elevators of all specifications and models, especially for large (60kw-100kw) and super-large elevators. The installation and maintenance device for the gearless traction machine can be used for assembly and disassembly in a production workshop, and is especially suitable for direct assembly and disassembly at the elevator use site. Background technique [0002] The traction machine is the power equipment of the elevator, also known as the main engine of the elevator. Its function is to convey and transmit power to make the elevator run. The transmission is transmitted to the traction sheave, while the power of the gearless traction machine is directly transmitted to the traction sheave without passing through the intermediate reducer. [0003] Chinese patent CN1058572A discloses a transmissionl...

AI Technical Summary

Problems solved by technology

This detachable structure is only suitable for small and medium-sized traction machines with small axial dimensions. For large or super-large traction machines with high power (such as greater than 60 kW), it is limited by the size of processing equipment. The motor stator And the radial size of the rotor cannot be expanded without limit, and the way of increasing the axial size is usually used to limit its radial size

Therefore, if a large or super-large traction machine adopts the above-mentioned structure, the cantilever fixed structure of the stator will cause a huge bending moment at the connection part and cause defects such as difficulty in positioning. Inability to transmit the torque required by large or oversized traction machines

[0004] Therefore, in the prior art, the traction machines of large or super-large elevators are still installed in the factory in the form of overall assembly, and then the assembled traction machines are hoisted in place by tower cranes before the building structure is capped. This not only increases the cost and difficulty of the installation of the traction machine in the building, but also after the elevator is put into use, if the parts are damaged or the traction sheave is worn and needs to be replaced, it is very inconvenient to disassemble and maintain, especially after disassembly of various tightly fitting parts. It cannot be reused after being disassembled by force, and only a large number of parts can be replaced as a whole, resulting in very high maintenance and transportation costs

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